Please use this identifier to cite or link to this item:
Title: Mössbauer studies of nano-size controlled iron oxide for biomedical applications
Authors: Lee, S.W.
Kim, S.J.
Shim, I.-B.
Bae, S. 
Kim, C.S.
Keywords: Bio-medical applications
Mössbauer spectroscopy
Issue Date: Oct-2005
Citation: Lee, S.W., Kim, S.J., Shim, I.-B., Bae, S., Kim, C.S. (2005-10). Mössbauer studies of nano-size controlled iron oxide for biomedical applications. IEEE Transactions on Magnetics 41 (10) : 4114-4116. ScholarBank@NUS Repository.
Abstract: We present the magnetic properties and the material characteristics of magnetite (Fe3O4), which was successfully prepared by using the reaction of iron(III) acetylacetonate [Fe(acac)3] with surfactants at high temperature (so called by "high temperature decomposition method"). According to the results of high resolution transmission electron microscopy (HRTEM) analysis, the prepared iron oxide particles had the average particle sizes between 4 and 6 nm and very uniform size distributions. The crystal structure analyzed by using both XRD and Mössbauer spectra confirmed that the prepared iron oxide nanoparticles only have single magnetite (Fe3O4) crystal phase. The typical superparamagnetic behaviors were observed from the prepared iron-oxide nanoparticles. In addition, they showed the saturation magnetization, M S of 59.5 emu/g for 4 nm, and of 59.7 emu/g for 6 nm, respectively at room temperature under the externally applied magnetic field of 10 kOe. The measured Mössbauer spectrum at 4.2 K was fitted using two magnetic components: (1) hyperfine fields Hhf = 514 and 492 kOe, (2) isomer shifts δ = 0.35 and 0.73 mm/s. The fitted data apparently verified that the prepared iron oxide samples only have pure magnetite ([Fe3+] A [Fe2+ Fe3+]BO4). © 2005 IEEE.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2005.855337
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 18, 2021


checked on Oct 18, 2021

Page view(s)

checked on Oct 14, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.